Hey guys.
I have designed two boards
board 1) 4th order active Linkwitz riley with balanced outputs using Bur Brown's drv134 chips.
board 2) preamp power supply with space for 4 relays to mute preamp outputs for a few seconds on powerup and on power down.
Attached are two word documents. Which are both in the Rev A version so excuse spelling mistakes. The word documents should explain most about these boards.
The boards are on order and I plan to build an active crossover into one of the 60mm enclosures of the recent Group buy.
I will ad the build pictures to this thread.
Obviously the crossover frequency itself depends on the components populated. The examples in the word documents are for 80Hz
Included in the word documents are a layout of cost to populate the boards. The cost is divided up also in parts that are optional and not optional , for example with or without balanced outputs.
The dvr134 chips are expensive ,but you can get 5 for free as samples directly from TI. I have ordered samples 2 x and both times they sent them to me
PS. I will have about 9 extra boards around the first week of December of each if anyone cares to experiment and build their own crossover.
Preamp power supply document: http://www.mediafire.com/?sko8jcbker6t3da
Linwitz-Riley Document: http://www.mediafire.com/?qut2oov25i7854p
More reading:
http://sound.westhost.com/project09.htm
http://www.linkwitzlab.com/filters.htm
http://sound.westhost.com/project05b.htm
I have designed two boards
board 1) 4th order active Linkwitz riley with balanced outputs using Bur Brown's drv134 chips.
board 2) preamp power supply with space for 4 relays to mute preamp outputs for a few seconds on powerup and on power down.
Attached are two word documents. Which are both in the Rev A version so excuse spelling mistakes. The word documents should explain most about these boards.
The boards are on order and I plan to build an active crossover into one of the 60mm enclosures of the recent Group buy.
I will ad the build pictures to this thread.
Obviously the crossover frequency itself depends on the components populated. The examples in the word documents are for 80Hz
Included in the word documents are a layout of cost to populate the boards. The cost is divided up also in parts that are optional and not optional , for example with or without balanced outputs.
The dvr134 chips are expensive ,but you can get 5 for free as samples directly from TI. I have ordered samples 2 x and both times they sent them to me
PS. I will have about 9 extra boards around the first week of December of each if anyone cares to experiment and build their own crossover.
Preamp power supply document: http://www.mediafire.com/?sko8jcbker6t3da
Linwitz-Riley Document: http://www.mediafire.com/?qut2oov25i7854p
More reading:
http://sound.westhost.com/project09.htm
http://www.linkwitzlab.com/filters.htm
http://sound.westhost.com/project05b.htm
